/* ============================================================
   CORRGO Invoice App – Stylesheet
   ============================================================ */
:root {
    --primary:   #1a3c5e;
    --accent:    #2e7d9c;
    --light:     #f4f7fb;
    --border:    #d0dae6;
    --text:      #1e2b3a;
    --muted:     #6b7c93;
    --danger:    #c0392b;
    --success:   #27ae60;
    --warning:   #e67e22;
    --white:     #ffffff;
    --radius:    6px;
    --shadow:    0 2px 8px rgba(0,0,0,0.10);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    font-size: 14px;
    color: var(--text);
    background: var(--light);
    min-height: 100vh;
}

/* ---- Navigation ---- */
nav {
    background: var(--primary);
    color: var(--white);
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 32px;
    height: 56px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.25);
}
nav .brand {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--white);
    text-decoration: none;
}
nav a {
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    font-size: 14px;
    padding: 4px 0;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}
nav a:hover, nav a.active {
    color: var(--white);
    border-bottom-color: #7dc8e8;
}

/* ---- Layout ---- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 20px;
}

/* ---- Cards ---- */
.card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    margin-bottom: 24px;
}
.card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border);
}

/* ---- Page title ---- */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}
.page-header h1 {
    font-size: 22px;
    color: var(--primary);
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius);
    border: none;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: opacity 0.15s, background 0.15s;
    white-space: nowrap;
}
.btn:hover { opacity: 0.88; }
.btn-primary   { background: var(--primary); color: var(--white); }
.btn-accent    { background: var(--accent);  color: var(--white); }
.btn-success   { background: var(--success); color: var(--white); }
.btn-danger    { background: var(--danger);  color: var(--white); }
.btn-outline   { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-sm        { padding: 5px 10px; font-size: 12px; }

/* ---- Forms ---- */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.form-group.full { grid-column: 1 / -1; }
label {
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.4px;
}
input[type=text], input[type=email], input[type=number], input[type=date],
select, textarea {
    padding: 8px 10px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--text);
    background: var(--white);
    transition: border-color 0.15s;
    width: 100%;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent);
}
textarea { resize: vertical; min-height: 80px; }

/* ---- Tables ---- */
.table-wrap { overflow-x: auto; }
table.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}
table.data-table th {
    background: var(--primary);
    color: var(--white);
    padding: 10px 12px;
    text-align: left;
    font-weight: 600;
    white-space: nowrap;
}
table.data-table td {
    padding: 9px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
table.data-table tr:last-child td { border-bottom: none; }
table.data-table tr:hover td { background: #f0f5fb; }
table.data-table .text-right { text-align: right; }
table.data-table .text-center { text-align: center; }

/* ---- Invoice Items Table ---- */
#items-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
#items-table th {
    background: var(--primary);
    color: var(--white);
    padding: 8px 10px;
    font-size: 12px;
    text-align: left;
}
#items-table td { padding: 6px 6px; border-bottom: 1px solid var(--border); }
#items-table td input, #items-table td select {
    padding: 5px 7px;
    font-size: 13px;
}
#items-table td.total-cell { font-weight: 700; color: var(--primary); text-align: right; min-width: 90px; }
#items-table .btn-danger { padding: 4px 8px; }

/* ---- Totals box ---- */
.totals-box {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
    margin-top: 16px;
}
.totals-row {
    display: flex;
    gap: 32px;
    font-size: 14px;
}
.totals-row .label { color: var(--muted); min-width: 160px; text-align: right; }
.totals-row .value { min-width: 120px; text-align: right; font-variant-numeric: tabular-nums; }
.totals-row.grand .label, .totals-row.grand .value {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
}

/* ---- Status badges ---- */
.badge {
    display: inline-block;
    padding: 3px 9px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}
.badge-draft     { background: #e8edf3; color: var(--muted); }
.badge-sent      { background: #d4edf7; color: #1a6a8e; }
.badge-paid      { background: #d4f7e0; color: #1a7a40; }
.badge-cancelled { background: #fde8e6; color: var(--danger); }

/* ---- Alerts ---- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 13px;
    border-left: 4px solid;
}
.alert-success { background: #eaf7ef; border-color: var(--success); color: #1a6a40; }
.alert-danger  { background: #fdecea; border-color: var(--danger);  color: #8b2218; }
.alert-info    { background: #e8f4fb; border-color: var(--accent);  color: #1a5a6e; }

/* ---- Stats grid ---- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow);
}
.stat-card .stat-value { font-size: 28px; font-weight: 700; color: var(--primary); }
.stat-card .stat-label { font-size: 12px; color: var(--muted); margin-top: 4px; }

/* ---- Archive actions row ---- */
.action-btns { display: flex; gap: 6px; flex-wrap: wrap; }

/* ---- Responsive ---- */
@media (max-width: 640px) {
    nav { gap: 16px; padding: 0 12px; }
    .container { padding: 16px 12px; }
    .form-grid { grid-template-columns: 1fr; }
    .page-header { flex-direction: column; align-items: flex-start; gap: 10px; }
}